A suspension device for segmented insulator

Abstract

The present invention provides a suspension device for a segmented insulator, belonging to the technical field of segmented insulators. It solves the problem that the existing suspension device causes the segmented insulator to be skewed. Both ends of the segmented insulator are fixedly connected to the contact line, the segmented insulator includes a pair of insulators, and the suspension device includes a fixed frame and a sliding frame slidably connected to the fixed frame. The sliding direction of the sliding frame relative to the fixed frame is consistent with the length direction of the contact line. The top ends of the pair of insulators are connected to the sliding frame, and the bottom ends are respectively connected to the corresponding contact lines. The suspension device has the advantage of preventing the segmented insulator from being deflected or skewed.

Description

Technical Field

[0001] The invention belongs to the technical field of segmented insulators and relates to a suspension device for a segmented insulator. Background Art

[0002] The segment insulator is an insulating device used when the overhead contact network is electrically segmented. Under normal circumstances, the pantograph slides through with power. When a certain segment of the overhead contact network fails or there is a power outage due to construction, the isolating switch at the segment insulator is opened to cut off the power to that part of the overhead contact network, while the other parts can be powered normally.

[0003] The segmented insulator is suspended by a suspension device. The existing suspension device, for example, the Chinese patent literature discloses a DC750V~3kV flexible suspended segmented insulator [application number: 201510078426.3; authorization announcement number: CN104627027B], which is composed of a mounting seat I, a mounting seat II, an adjustment insulating rod, a contact wire insulating rod, a pair of connecting wire clamps, a pair of long slide plates, a pair of short slide plates, a pair of slide plate fixing brackets, and a pair of contact wire hanging string clamps; the adjustment insulating rod and the contact wire insulating rod are horizontally connected and fixed between the mounting seat I and the mounting seat II; a pair of connecting wire clamps are horizontally connected to the rear of the mounting seat I and the mounting seat II and installed and fixed on the end of the contact wire; a pair of long slide plates and a pair of short slide plates are staggered on both sides of the mounting seat I and the mounting seat II, and the middle parts of the long slide plates and the short slide plates are respectively fixed on both sides of the mounting seat I and the mounting seat II, and the tails are connected and fixed on the contact wire through the contact wire hanging string clamp.

[0004] The contact wire acts as a contact slide and transmits electric energy to the electric locomotive through the pantograph uninterruptedly. At the turnout and crossover, the contact wire is connected through a segmented insulator. One end of the contact wire is a fixed end and the other end is a buffer end. The length of the contact wire will change due to thermal expansion and contraction. When the length of the contact wire changes due to thermal expansion and contraction, the position of the segmented insulator along the length of the contact wire will change. Since the crimped suspension string is flexible, the top position of the crimped suspension string is inconvenient, and the bottom position changes, that is, the height of the crimped suspension string in the vertical direction changes, which causes the segmented insulator to deflect in the horizontal and / or vertical direction, resulting in skew problems. In severe cases, it may even affect the electrical connection of the contact network. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems existing in the prior art and to propose a suspension device for a segmented insulator, so as to solve the technical problem of how to prevent the segmented insulator from deflecting or tilting.

[0006] The object of the present invention can be achieved through the following technical solutions: a suspension device for a segmented insulator, both ends of the segmented insulator are fixedly connected to the contact line, characterized in that the segmented insulator includes a pair of insulators, the suspension device includes a fixed frame and a sliding frame slidably connected to the fixed frame, the sliding direction of the sliding frame relative to the fixed frame is consistent with the length direction of the contact line, the top ends of the pair of insulators are connected to the sliding frame, and the bottom ends are respectively connected to the corresponding contact lines.

[0007] The insulator connects the sliding frame and the contact wire, so that the suspension device is a rigid suspension. The sliding direction of the sliding frame relative to the fixed frame is consistent with the length direction of the contact wire. When the thermal expansion length of the contact wire increases, the contact wire drives the segmented insulator and the sliding frame to slide relative to the fixed frame, so that the sliding frame moves toward the buffer end of the contact wire. The movement of the sliding frame buffers and absorbs the extension of the contact wire, so that the segmented insulator is inconveniently positioned in the vertical direction, so that the segmented insulator will not deflect and skew, and the stability of the contact network is improved. When the cold contraction length of the contact wire is shortened, the contact wire drives the segmented insulator and the sliding frame to slide relative to the fixed frame, so that the sliding frame moves toward the fixed end of the contact wire. The movement of the sliding frame buffers and absorbs the shortening of the contact wire, so that the position of the segmented insulator in the vertical direction is inconvenient, so that the segmented insulator will not deflect and skew, and the stability of the contact network is improved.

[0008] In the above-mentioned suspension device for a segmented insulator, at least one long strip-shaped guide groove is recessed in the fixed frame and passes through both ends of the fixed frame, and the sliding frame includes at least one long strip-shaped guide portion protruding therefrom, and the guide groove and the guide portion are arranged one-to-one, and the guide portion is embedded in the guide groove so that the sliding frame is clamped and suspended at the bottom of the fixed frame. This structure allows the guide portion to pass through the guide groove horizontally, making it convenient to connect the fixed frame and the sliding frame, and the fixed frame and the sliding frame are connected by clamping and hanging.

[0009] In the above-mentioned suspension device for a segmented insulator, the number of the guide groove and the guide part are both two, the cross-sections of the guide groove and the guide part are both circular, the two guide groove notches are arranged obliquely inwardly opposite to each other, the width of the guide groove notch is smaller than the inner diameter of the guide groove, the sliding frame also includes a main body with a T-shaped cross-section, the two guide parts are respectively fixedly connected to the oblique upper part of the top two ends of the main body, the connection between the main body and the guide part is indented, and when the guide part is located in the guide groove, the connection is located in the notch of the guide groove. This structure makes reasonable use of space, makes it convenient to connect the fixed frame and the sliding frame by clamping and hanging, and makes the sliding frame hanging stable. At the same time, the cross-sections of the guide groove and the guide part are both circular, so that the sliding frame moves smoothly relative to the fixed frame, so that the segmented insulator will not get stuck and will not deflect or skew.

[0010] As another case, in the above-mentioned suspension device of a segmented insulator, the cross-sections of the guide groove and the guide part are both circular, the notch of the guide groove is located at the bottom of the fixed frame, the width of the notch of the guide groove is smaller than the inner diameter of the guide groove, the sliding frame also includes a main body in the shape of a long strip, the guide part is fixedly connected to the top of the main body along the length direction of the main body, the outer diameter of the guide part is larger than the thickness of the main body, and the connection between the main body and the guide part is located at the notch of the guide groove. This structure makes reasonable use of space, makes it convenient to connect the fixed frame and the sliding frame by clamping and hanging, and makes the sliding frame hanging stable. At the same time, the cross-sections of the guide groove and the guide part are both circular, so that the sliding frame can move smoothly relative to the fixed frame, so that the segmented insulator will not get stuck and will not deflect or skew.

[0011] In the above-mentioned suspension device of a segmented insulator, a plurality of recessed positioning grooves in the shape of an open ring are arranged at intervals in the guide groove or / and on the guide portion, a plurality of balls are arranged in the positioning groove and the ball parts are arranged protruding outside the positioning groove, the balls are located between the fixed frame and the sliding frame and the balls are in contact with both the fixed frame and the sliding frame. The positioning groove is used to position the balls, and the arrangement of the balls enables the sliding frame to move smoothly relative to the fixed frame, so that the segmented insulator will not get stuck and will not deflect or skew.

[0012] In the above-mentioned suspension device for a segmented insulator, both ends of the guide portion are detachably fixed with limit bolts, and the circumferential outer edge of the limit bolt is protruding outside the circumferential edge of the guide portion. The setting of the limit bolt plays a limiting role so that the sliding frame will not fall off the fixed frame, and the limit bolt is detachable and will not affect the connection between the sliding frame and the fixed frame.

[0013] In the above-mentioned suspension device of a segmented insulator, the segmented insulator also includes an insulating rod fixedly arranged between a pair of contact wires, and the ends of both ends of the insulating rod are fixedly connected with hinge seats, and each of the contact wires is fixedly connected with a suspension wire clamp, and the suspension device also includes two first hinges and two second hinges, both of which are hard, and one end of the first hinge and the second hinge are respectively hinged to the corresponding insulator, and the other end of the first hinge is hinged to the corresponding suspension wire clamp, and the other end of the second hinge is hinged to the corresponding hinge seat. The first hinge, the second hinge and the contact wire form an approximately triangular structure, so that the length change of the contact wire can be transmitted to the sliding frame more accurately and stably, so that the sliding frame can move relative to the fixed frame in time, buffer and absorb the extension of the contact wire; the second hinge connects the insulator and the insulating rod, improves the overall strength of the segmented insulator, and improves the stability of the segmented insulator moving with the sliding frame.

[0014] In the above-mentioned suspension device for a segmented insulator, the first hinged member is in the shape of an elongated ring.

[0015] In the above-mentioned suspension device for a segmented insulator, the second hinge is in the shape of an elongated ring, and one end of the second hinge hinged to the hinge seat has a limiting portion, which can limit the sliding of the second hinge relative to the hinge seat.

[0016] In the above-mentioned suspension device for a segmented insulator, the insulator includes a pair of hinged plates at the bottom end, a set spacing is provided between the pair of hinged plates, a pair of hinged columns are fixedly connected between the pair of hinged plates, one end of the first hinge and the second hinge are respectively hinged to the corresponding hinged columns, a gap is provided between the first hinge and the inner side walls of the pair of hinged plates, and a gap is provided between the second hinge and the inner side walls of the pair of hinged plates. This structure allows the insulating rod and the contact line to have some slight deviation or shaking in the horizontal direction, and the setting of the gap makes it difficult for the segmented insulator to be damaged when there is slight horizontal rotation or shaking.

[0017] Compared with the prior art, the suspension device of a segmented insulator provided by the present invention has the following advantages:

[0018] 1. This suspension device makes the sliding frame move relative to the fixed frame toward one end of the contact line when the contact line is extended due to thermal expansion, and moves relative to the fixed frame toward the other end of the contact line when the contact line is shortened due to thermal contraction. The deformation of the contact line is buffered and absorbed by the movement of the sliding frame relative to the fixed frame, so that the segmented insulator will not deflect or skew, thereby improving the stability of the contact network.

[0019] 2. The insulator of the suspension device is connected to the contact wire and the insulating rod respectively through the first hinge and the second hinge, thereby improving the overall strength of the segmented insulator and allowing the length change of the contact wire to be transmitted to the sliding frame more accurately and stably, so that the sliding frame can move relative to the fixed frame in a timely and stable manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the segmented insulator suspension device.

[0021] Figure 2 It is a cross-sectional schematic diagram of the connection between the fixed frame and the sliding frame of the suspension device.

[0022] Figure 3 It is an exploded schematic diagram of the first hinge and the second hinge of the suspension device.

[0023] Figure 4 It is a schematic diagram of the articulation between the first articulated member and the second articulated member of the suspension device and the insulator.

[0024] In the figure, 1. segmented insulator; 11. insulator; 111. hinged plate; 112. hinged column; 12. insulating rod; 13. hinged seat; 14. suspension clamp; 15. first hinge; 16. second hinge; 161. limit part; 2. contact line; 3. fixing frame; 31. guide groove; 32. positioning groove; 4. sliding frame; 41. guide part; 42. main body; 5. ball bearing; 6. limit bolt. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] Embodiment 1

[0027] like Figure 1 As shown, the segmented insulator 1 includes an insulator 11, an insulating rod 12, an articulated seat 13, a suspension clamp 14, a first articulated member 15 and a second articulated member 16, and the suspension device includes a fixed frame 3 and a sliding frame 4. The contact wire 2 is disconnected in the middle and connected through the segmented insulator 1, and both ends of the segmented insulator 1 are fixedly connected to the contact wire 2.

[0028] like Figure 2 As shown, the fixed frame 3 is recessed with two long strip-shaped guide grooves 31 that penetrate through the two ends of the fixed frame 3, and the sliding frame 4 includes two long strip-shaped guide parts 41 that are protruded, and the two ends of the guide parts 41 are detachably fixed with limit bolts 6, and the circumferential outer edge of the limit bolts 6 is protruded outside the circumferential edge of the guide parts 41. The guide grooves 31 and the guide parts 41 are arranged one by one, and the cross sections of the guide grooves 31 and the guide parts 41 are both circular, and the notches of the two guide grooves 31 are arranged obliquely inwardly opposite to each other, and the width of the notches of the guide grooves 31 is smaller than the inner diameter of the guide grooves 31. The sliding frame 4 also includes a main body 42 with a T-shaped cross section, and the two guide parts 41 are respectively fixedly connected to the oblique upper ends of the top of the main body 42, and the connection between the main body 42 and the guide part 41 is set indented. When the guide part 41 is located in the guide groove 31, the connection is located in the notch of the guide groove 31, so that the sliding frame 4 is clamped and suspended at the bottom of the fixed frame 3.

[0029] In this embodiment, three recessed open ring-shaped positioning grooves 32 are arranged in the guide groove 31 at intervals, and twenty-two balls 5 are arranged in each positioning groove 32. The balls 5 partially protrude from the positioning groove 32. The balls 5 are located between the fixed frame 3 and the sliding frame 4 and the balls 5 are in contact with both the fixed frame 3 and the sliding frame 4. In actual production, the number of positioning grooves 32 can be two or four, the number of balls 5 can be ten or forty, and the guide groove 31 can be located on the guide portion 41.

[0030] The insulating rod 12 is fixedly arranged between a pair of contact wires 2. Figure 3As shown, the ends of both ends of the insulating rod 12 are fixedly connected with hinge seats 13, and each contact wire 2 is fixedly connected with a suspension wire clamp 14. The number of the first hinge 15 and the second hinge 16 are both two, which are made of hard metal material and are rigid. The first hinge 15 and the second hinge 16 are both in the shape of long strip rings. One end of the first hinge 15 and the second hinge 16 are respectively hinged to the corresponding insulator 11, the other end of the first hinge 15 is hinged to the corresponding suspension wire clamp 14, and the other end of the second hinge 16 is hinged to the corresponding hinge seat 13. The end of the second hinge 16 hinged to the hinge seat 13 has a limit portion 161, and the limit portion 161 can limit the second hinge 16 from sliding relative to the hinge seat 13.

[0031] like Figure 4 As shown, the insulator 11 includes a pair of hinged plates 111 located at the bottom end, a set spacing is provided between the pair of hinged plates 111, a pair of hinged columns 112 are fixedly connected between the pair of hinged plates 111, one end of the first hinge 15 and the second hinge 16 are respectively hinged to the corresponding hinged columns 112, a gap is provided between the first hinge 15 and the inner side walls of the pair of hinged plates 111, and a gap is provided between the second hinge 16 and the inner side walls of the pair of hinged plates 111.

[0032] One end of the contact wire 2 is a fixed end, and the other end is a buffer end. When the thermal expansion length of the contact wire 2 increases, the contact wire 2 drives the segmented insulator 1 and the sliding frame 4 to slide relative to the fixed frame 3 along the length direction of the contact wire 2, so that the sliding frame 4 moves toward the buffer end of the contact wire 2; when the cold contraction length of the contact wire 2 decreases, the contact wire 2 drives the segmented insulator 1 and the sliding frame 4 to slide relative to the fixed frame 3 along the length direction of the contact wire 2, so that the sliding frame 4 moves toward the fixed end of the contact wire 2.

[0033] Embodiment 2

[0034] The structure and principle of this embodiment are basically the same as those of the first embodiment, except that, in this embodiment, the cross-sections of the guide groove 31 and the guide portion 41 are both circular, the notch of the guide groove 31 is located at the bottom of the fixed frame 3, the width of the notch of the guide groove 31 is smaller than the inner diameter of the guide groove 31, the sliding frame 4 also includes a main body 42 in the shape of a long strip, the guide portion 41 is fixedly connected to the top of the main body 42 along the length direction of the main body 42, the outer diameter of the guide portion 41 is larger than the thickness of the main body 42, and the connection between the main body 42 and the guide portion 41 is located at the notch of the guide groove 31.

[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0036] Although the present invention uses more terms such as segmented insulator 1, insulator 11, hinged plate 111, hinged column 112, insulating rod 12, hinged seat 13, suspension wire clamp 14, first hinge 15, second hinge 16, limiter 161, contact wire 2, fixing frame 3, guide groove 31, positioning groove 32, sliding frame 4, guide part 41, main body 42, ball 5, limiter bolt 6, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A suspension device for a segmented insulator, wherein both ends of the segmented insulator (1) are fixedly connected to a contact wire (2). It is characterized in that The segmented insulator (1) comprises a pair of insulators (11); the suspension device comprises a fixed frame (3) and a sliding frame (4) slidably connected to the fixed frame (3); the sliding direction of the sliding frame (4) relative to the fixed frame (3) is consistent with the length direction of the contact wire (2); the top ends of the pair of insulators (11) are connected to the sliding frame (4), and the bottom ends are respectively connected to the corresponding contact wires (2); the segmented insulator (1) also comprises an insulating rod (12) fixedly arranged between the pair of contact wires (2); the insulating rod (12) has two ends. The ends of the ends are fixedly connected with hinged seats (13), and each of the contact wires (2) is fixedly connected with a suspension wire clamp (14). The suspension device also includes two first hinged parts (15) and two second hinged parts (16), both of which are hard. One end of the first hinged part (15) and the second hinged part (16) are respectively hinged to the corresponding insulator (11), the other end of the first hinged part (15) is hinged to the corresponding suspension wire clamp (14), and the other end of the second hinged part (16) is hinged to the corresponding hinged seat (13).

2. A suspension device for a segmented insulator according to claim 1, It is characterized in that The fixed frame (3) is recessed with at least one long strip-shaped guide groove (31) that runs through both ends of the fixed frame (3); the sliding frame (4) comprises at least one long strip-shaped guide portion (41) that is protruded; the guide groove (31) and the guide portion (41) are arranged in a one-to-one correspondence; the guide portion (41) is embedded in the guide groove (31) so that the sliding frame (4) is clamped and suspended on the bottom of the fixed frame (3).

3. A suspension device for a segmented insulator according to claim 2, It is characterized in that The number of the guide groove (31) and the guide part (41) is two, the cross-sections of the guide groove (31) and the guide part (41) are both circular, the notches of the two guide grooves (31) are arranged obliquely inwardly opposite to each other, the width of the notch of the guide groove (31) is smaller than the inner diameter of the guide groove (31), the sliding frame (4) also includes a main body (42) with a T-shaped cross-section, the two guide parts (41) are respectively fixedly connected to the oblique upper sides of the two ends of the top of the main body (42), the connection between the main body (42) and the guide part (41) is retracted, and when the guide part (41) is located in the guide groove (31), the connection is located in the notch of the guide groove (31).

4. A suspension device for a segmented insulator according to claim 2, It is characterized in that The cross sections of the guide groove (31) and the guide portion (41) are both circular, the notch of the guide groove (31) is located at the bottom of the fixed frame (3), the width of the notch of the guide groove (31) is smaller than the inner diameter of the guide groove (31), the sliding frame (4) further comprises a main body (42) in the shape of a long strip, the guide portion (41) is fixedly connected to the top of the main body (42) along the length direction of the main body (42), the outer diameter of the guide portion (41) is larger than the thickness of the main body (42), and the connection between the main body (42) and the guide portion (41) is located at the notch of the guide groove (31).

5. A suspension device for a segmented insulator according to claim 2, 3 or 4, It is characterized in that A plurality of recessed open ring-shaped positioning grooves (32) are arranged at intervals in the guide groove (31) or / and on the guide portion (41); a plurality of balls (5) are arranged in the positioning groove (32) and the balls (5) are partially protruding outside the positioning groove (32); the balls (5) are located between the fixed frame (3) and the sliding frame (4) and the balls (5) are in contact with both the fixed frame (3) and the sliding frame (4).

6. A suspension device for a segmented insulator according to claim 2, 3 or 4, It is characterized in that Both ends of the guide portion (41) are detachably fixedly connected with limiting bolts (6), and the circumferential outer edge of the limiting bolt (6) is protruding outside the circumferential edge of the guide portion (41).

7. A suspension device for a segmented insulator according to claim 1, 2, 3 or 4, It is characterized in that The first hinged member (15) is in the shape of an elongated ring.

8. A suspension device for a segmented insulator according to claim 1, 2, 3 or 4, It is characterized in that The second hinged member (16) is in the shape of a long ring, and one end of the second hinged member (16) hinged to the hinge seat (13) has a limiting portion (161), and the limiting portion (161) can limit the second hinged member (16) from sliding relative to the hinge seat (13).

9. A suspension device for a segmented insulator according to claim 1, 2, 3 or 4, It is characterized in that The insulator (11) comprises a pair of hinged plates (111) located at the bottom end, a set spacing is provided between the pair of hinged plates (111), a pair of hinged columns (112) are fixedly connected between the pair of hinged plates (111), one end of the first hinged member (15) and the second hinged member (16) are respectively hinged to the corresponding hinged columns (112), a gap is provided between the first hinged member (15) and the inner side walls of the pair of hinged plates (111), and a gap is provided between the second hinged member (16) and the inner side walls of the pair of hinged plates (111).

Images